Centering and clamping device adapted for spools and spindles in the textile industry



y 9, 1935. A. H. BRUGGER mwm CENTERINQ AND CLAMPING DEVICE ADAPTED FOR SPOOLS AND SPINDLES IN THE TEXTILE INDUSTRY Filed July 11, 1934 2 Sheets-Sheet l y [N VENTQR AL 852 T 6 581/566 A TTORNE Y5 July 9, 1935. A, H, BRUGGER 2,007,705

CENTERING AND CLAMPING DEVICE ADAPTED FOR SPOOLS AND SPINDLES IN THE TEXTILE INDUSTRY Filed July 11, 1934 2 Sheets-Sheet 2 T 73 17 24 I 22 74 33 29 I 1/ r [6 INVENTOR 14L BEA-2T Be 056651? BY ATTORNEYS Patented July 9,1935 i "CENTERING AND CLAMPING DEVICE ADAPTED FOR SPOOLS AND SPINDLES IN THEIEXTILE INDUSTRY Albert Henry Briig'ger, "Philadelphia, Pa.

f Application July 11, .1934,Seri al No. 7343625 In France February 3, 1934 Claims. (Cl- 242-462) ED" STATES PATENT OFF-[CE I This invention relates to centering and clamp- Figures 4 and 5 illustratethe method ofecen'. ingwdevices and refers more particularly t means telfing and clamping a spool upon a springless for .oonnecting in connection with textile mapmdle by means of aclampnut'shown in Eigohin'ery'spools. and spindles] and for holding such ures 1 and 2.

spoolsjperfectly" centered upo'n their shafts, spin- F gure 6 is.a sectional vviewshowing a.part. -Sof dl s' o ;x I, I the. spool attached to its spindle'by meansiof-a Ali-object of .the present invention isithe proamp nut.

visionlgofysimple.and. easilyoperable means for Figure 7 shows a device for centering and e c enterin'gea bobbin, swift.) spool or similar rotary p ng. a cylindrical tubular, element upon .it 10? element upon'itsshaft or spindle and for firmly shaft or spindle. 10 connecting' the spool'to its spindle. Flsure ws a device for e e in s d Heretofore. spools were connectedv with their amping a-oonical. hollow element uponits snafu spindles by anumberof-iht springs which did o Splndle.

nothold th'e spools perfectly centered and which The centering and clamping device constructed becaine'wornfweakened and even broken when i a o dance withthe principles of the present continuously ,usedQ fThes esprings muSt be renv i n comprises-a clamp nut 9 shown'on a placed at'regular, intervals and often cause an ger scale in Figures 1, 2 and 6 of'the drawings. rr ll riw hd he w ie jhes a r r The Clamp nut 9 i provided with'asupport'or 1 rimental effect on: finerayon. and silk yarns. discv ving an outer annularend .fiange H i in side elevation.

Another object 'ofithis'invention isgthe provision d oryplete I0 base central p n (and er? a sprin'gless spindle incombination with 1 p ovid d with an inner cylindricalfiange. I 3 ineansfor rapidlyand'automatically centering a Surrounding the pening I 2. Another intermespool andfor' holding the spool firmly upon the d ate circular flange i4 formed on the sur- Spindle. a I faces 15 of the (1150' Hi, and is. situated between The "b ove and'other objects of this invention the flanges and 3. As shown more clearly may be realizedthrough theprovision of a clamp fF f 0f the d awings the flange "M is bent nut comprising a disc carrying a n m over aportion of the surface IS-sQithatthe-flange uatefijawsprovided with interior screw threads enden c t part o the acelfi .form

and having-conical exterior endsurfaces; the an ul r groove or a pocketlt. v i r ija'ws are.Inountedwith a certain amount of play The disc carriesla number jaws H. .?In

upon the disc yso that they can open and clo the example illustrated, the disc '10 is-provided and their coni'c al and surfaces are adapted to with two jaws H, althou bv us y, any: suitcome in contact withithe edges of a spool or other able er of jaws maybe used. rotary eleinent. mounted upon aspindle or shaft S S own more clearly Figure 3 io'fithe draw- Lhreaded portion. An intermediate e h o the iaw p noute cylinsupport may be provided between the clamp t drical surface l8 and an outer conical end surface aud t-he :SDool. "The pressure of theclamn nut 9. Eac j also has eonicelinner agai'nshthe spool'or the support causes a'closing f e 25 d a Cylindrical inner Surfa0e1l7and of the jawsfso that their screw threads en ge is provided with inner screw threads 20. The 40 the screwthr-eads of the spindle. Then a slight outer end 23 of each'jaw I l istapered,'while-the turning of' 'the 'disdwill besufiicient to clamp the pposite inner end of the jaw has the form of a spool upoin 'its'spindle' At the sameftime, the fiange'24, which may be inserted intothe. groove spool is centered by means of the conical'end sur or pocket l6 and is placed between the flanges faces of-the jaws. l is and M of the disc"). L

' The invention will appear more clearly from '"As shown in Figure 1 of the drawings, the an-* the following' detailed description when taken in nular groove I6 is divided by projections 25 'and connection with the accompanying drawings 26 which are situatedsymmetrically-around the showingpreferred embodiments of the inventive opening l2 in the groove [6 and which prevent idea. i the jaws H from swinging around" the central In'the drawings: opening I2 and from coming too close to each 50 mFigure l'shows a clamprnut in front elevation. other. The dimensions of the jaws I 1 'and-of'the -Figu1e 2isa'section along the. line 2-2 of Fig projections 25 and 26 should besuch that eaoh ure 1; i jaw ll'l may be moved to a certain extent within *Figure 3 shows oneof thejaws of the clamp nut the groove :l6 between a pair of projections fl As shown more clearly in Figures 4 and 6 of the drawings, the cross-sectional area of the groove I6 is greater than that of the flange 24. Furthermore, the outer diameter of the flange I3 is smaller than the diameter of the cylindrical surface 22, and the diameter of the cylindrical surface I8 is smaller than the smallest diameter of the flange I4. Due to this arrangement the jaws I1 are carried with a certain amount of play by the disc I0, so that they may tilt backwards and forwards when the clamp nut 9 is placed upon a spindle 21, or when it is removed from the spindle (Fig. 4).

As shown in Figures 4, 5 and 6 of the drawings, the spindle 21 carrying a spool 28, comprises a threaded portion 29 having screw threads which correspond to the inner screw threads 20 of the jaws I1. The spindle 21 carries a friction boss 30 provided with a support 41 having a conical surface 3|. In the example illustrated, the conical support 41 is integral with the friction boss 30. The friction boss 30 may be either cast of one piece with the spindle 21 or it may be cast separately, and then rigidly connected with the spindle 21.

l The method of centering the spool 28 upon the spindle 21 and of firmly connecting the spool with the spindle is illustrated in Figs. 4 and 5 of the drawings.

The spool 28 is first mounted loosely upon the spindle 21 and is moved to the left (looking in the direction of Figures 4 and 5) until the conical surface 3| of the member 41 is brought in contact with the conical surface 32 of the spool. Then the clamp nut 9 is mounted upon the end 340i the spindle 21. Since the jaws I1 are loosely mounted upon the plate In these jaws will open somewhat to receive the end 34 of the spindle 21. Inthe position shown in Figure 4, the jaws I1 surround the spindle 21 and are somewhat spread apart by the spindle.

The clamp nut 9 is moved toward the spool 28 and the conical surfaces I9 of the jaws H are pressed; against the conical surfaces 33 of the spool 28. Then the spool 28 is also pressed by the clamp nut 9 against the friction boss 30. Due to this pressure the jaws I1 will close and their screw threads 20 will engage the threaded portion 29 of the spindle 21. Then half a turn of the disc III will be sufficient to cause a clamping of the jaws I1 around the spindle 21.

In this position the clamp nut 9 is firmly attached to the spindle 21. The bobbin 28 is held tightly between the friction boss 3|].and the clamp nut-9 so that it will rotate along with the spindle 21.

To remove the spool 28 it merely is necessary to turn the clamp nut 9 in the opposite direction and then to pull the clamp nut 9 and the'bobbin 28 -off the end 34 of the spindle 21.

In the position shown in Figures 5 and 6, the central axis of the spool 28 coincides exactly with the central axis of the spindle 21. The centering of the spool 28 is facilitated through the provision of conical surfaces 32 and '33, which cooperate with-the conical surface 3| of the friction boss 30 and the conical surfaces I9 of the jaws I1. Obviously, the apexes of all these conical surfaces should be upon the central axis of the spindle 21.

Figure 7 illustrates a device for centering and clamping a tube 35 upon a spindle 36 having a threaded portion 31.

The cylindrical spindle 36 carries a disc or a frictionboss 38 which is rotatable along with the I spindle. A conical support 39 carried by the spindle 36 is provided with a fiat surface 40 which is pressed against the adjacent surface of the friction boss 38, and a conical surface 4|. Another conical support 42 which is also carried by the spindle 31, is provided with an inner conical surface 43 and an outer conical surface 44.

The hollow tube 35, which is provided with conical surfaces 45 and 46 is placed between the two supports 39 and 42, and is carried by these supports. The clamp nut 9 carried by the spindle 36 presses the support 42 against the tube 35 and establishes a permanent clamping connection between the spindle 36, the supports 39 and 42 and the tube 35.

The device shown in Fig. 8 of the drawings is used for centering and clamping a conical hollow tube 50 upon a spindle 5|, provided with two threaded ends 52 and 53. The screw threads 52 may be used for connecting the spindle 5| to a separate support, not shown in the drawings. The spindle 5| carries two supports 54 and 55. The support 54 has an outer conical surface 55 and an inner conical surface 51. The support 55 has an outer conical surface 58 and an inner conical surface 59. The tube 50 is provided with conical surfaces 60 and 6|, which are brought in contact with the surfaces 56 and 58, respectively.

The tube 50 is held firmly upon the spindle 5| between the two supports 54 and 55 by means of a pair of clamp nuts 9 and 90 which are mounted on both ends 52 and 53 of the spindle 5|.

What is claimed is:

1. A centering and clamping device comprising in combination with a spindle having a threaded portion a rotary member mounted upon said spindle and a support mounted upon said spindle and carrying one end of said rotary member; a clamp nut comprising a disc and a plurality of arcuate jaws movably mounted upon said disc, each of said jaws having inner screw threads engaging the threaded portion of said spindle and also having an outer conical end surface engaging said support.

2. A centering and clamping device, comprising in combination with a spindle having two threaded end portions and a rotary member mounted upon said spindle; a pair of clamp nuts carried by the two threaded end portions of said spindle and clamping said rotary member, each of said clamp nuts comprising a disc and a plurality of arcuate jaws movably mounted upon said disc, each of said jaws having inner screw threads engaging a threaded portion of said spindle and also having an outer conical end surface.

3. In textile machinery, a spool device including a spool element having a central elongated tubular member to receive the yarn or thread, and transverse end portions to hold the yarn or thread on said tubular member and a spindle element having a longitudinal axial member passing through said tubular member and provided with abutment members to contact with andbeclamped against the ends of said spool element and to center said spool element upon said spindle element, at least one of said abutment members having an adjustable centering connection to a threaded portion of said spindle, said last-mentioned abutment element including a disc and a plurality of arcuate jaws movably mounted upon said disc, each of said jaws having inner screw threads to engage the threaded portion of said spindle and also having an outer conical end surface adapted to come in contact with the central opening in the end of said spool element, which contact will press said jaws inwardly, whereby said inner threads engage the threaded portion of said spindle.

4. In textile machinery, a spool device including a spool element having a central elongated tubular member to receive the yarn or thread, and transverse end portions to hold the yarn or thread on said tubular member and a spindle element having a longitudinal axial member passing through said tubular member and provided with abutment members to contact with and be clamped against the ends of said spool element and to center said spool element upon said spindle element, at least one of said abutment members having an adjustable centering connection to a threaded portion of said spindle, said lastmentioned abutment element including a disc and two semi-circular jaws pivotally mounted upon said disc, each of said jaws having inner screw threads adapted to engage the threaded portion of said spindle and also having an outer conical end surface adapted to come in contact with the central opening of said spool element.

5. In textile machinery, a spool device including a spool element having a central elongated tubular member to receive the yarn or thread, and transverse end portions to hold the yarn or thread on said tubular member and a spindle element having a longitudinal axial member passing through said tubular member and provided with abutment members to contact with and be clamped against the ends of said spool element and to center said spool element upon said spindle element, both of said abutment members having conical 'end'portions which will fit into the central opening in the ends of said spool element and one of said members being provided with a threaded connection to said spindle element, and the conical end portion of one of said members being split to enable it to be readily moved along said spindle up to clamping position.

ALBERT HENRY BRiiGGER. 

